Chassis mounting for radio receivers and the like



ApriF 2, 13. w. J. sNYDER 2,115,653 1 cHAssIs'MQuNTING FOR RADIO REcEIvERs' AND THELIKE Filed March 11, 1955 1 Patented Apr. ze, 193s UNIT-Eo STATES CHASSIS MOUNTING F03 RADIO RECEIVEES AND I'HE' LIKE William J. Snyder, Brookline, Pa., signor to Philco Radio a Television Corporation, Philadelphia, Pa., a corporation of Delaware Application Maman, 1935. serial No. 10.528 s claim. (ci. 24a-ass) This invention relates to a novel mounting for a radio chassis or the like and has for its principal object the provision of an improved mounting for the receiver chassis within the usual cabinet of the radio receiver.

Another object of the'invention is to provide a radio receiver chassis mounting which is simple and which facilitates assembly of the chassis Within the cabinet and which requires little or no attention or manipulation by the customer.

A further object of the invention is to provide a mounting which is adapted to floatingly support the chassis and which prevents displacement of or injury vto the parts of the radio receiver, o particularly during shipping thereof.

Still another object of the invention ist'o provide a mounting which serves to align certain parts of the radio receiver, thereby insuring that the parts may be readily assembled without diiiiculty. y

lThe invention may be clearly understood by reference to the accompanying drawing. illustrating a preferred embodiment.

In the drawing:

Fig. 1 is a fragmentary section taken through the radio receiver cabinet and showing the receiver chassis and the mounting therefor in side elevation;

Fig. 2 is a perspective view of the receiver chassis turned up on its rear wall;

Fig. 3 is an enlarged fragmentary section taken throughnone of the front mounting units;

Fig. 4 is a similar view of one of the rear mounting units; i l

Fig. 5 is a perspective view of one of the mounting elements;

Fig. 6 is a face view of the same;

Fig. 7 is a perspective view showing certain parts of another of the mounting units; and

Fig. 8 is a perspective view of the' sleeve which is adapted forvassociation therewith.

Referring to Fig. '1, the numeral I designates the front wall of the usual radio receiver cabinet, while the numeral 2 designates thehorizontal shelf or bottom wall of the cabinet upon" which the radio receiver is mounted. The receiver chassis is shown at 3 and in accordance with the present invention, the chassis is mounted within the cabinet by meansof a pair of front mounting units 4 and a. pair of rear mountingv units 5. The chassis may take the form of an inverted shallow box, as shown in Fig. 2, to accommodate the terminals and wiring or other elements as in usual practice. It will be understood that the essential parts of the receiver, such as the transformers, tuning condensers, vacuum tubes, etc., will be mounted on top of the chassis as is the custom.

In the present instance,v the front wall Vof the` chassis is provided with integral projections or 5 lugs I which are spaced apart near the top of the chassis, as shown clearly in Fig. 2. As illustrated in Fig. 3, these lugs may be formed by extruding small sheet metal disks and inserting the members thus formed through openings in chassis 10 wail and spotwelding the said members to the wall. Near the rear wall of the chassis, there are provided spaced mounting portions l which may be provided with tapped holes or apertures 8. Thus, there are established four mounting points for the chassis 4and the elements just described are adapted to cooperate with the mounting units in the manner now to be described. v

In Fig. 3,' there is shown one of the front mounting units! which comprises a recessed or cup-like member 9 formed of highly resilient material, such as live rubber. As shown more clearly in Figs. 5 and 6, this member has a cylindrical portion I0 with a deep cylindrical recess II extending axially thereof but eccentricaliy located as shown in Fig. 6. An integral bead or ridge I2 is provided along the bottom of the cylindrical portion I0. At one end of the cylindrical portion, there is provided a ange or head I3.

The front wall I of the cabinet is provided with recesses I4 of such size and shape as to snugly .receive the body portion of the resilient member 9 with the flange I3 abutting against the rear surface of wall I. When positioned in the wall recesses, the resilient members 8 are adapt- 35 ed to snugly receive the lugs 6 with the front wall of the chassis abutting against the iianges or heads Il, as shown clearly in Fig. 3. It will be seen that this provides a resilient mounting for the front of the chassis, substantially preventing movement of the chassis in any direction parallel to the cabinet wall I and eil'ectively cushioningthe front portion of the chassis and maintaining it free of contact with the receiver cabinet. It will now be apparent that the reason for having the recesses I I of the members 9 eccentricaliy located and for providingthe beads orrldges I2 is to give an increased thickness of the resilient member beneath lugs 6 where it is most neededand to key the eccentric recesses II in proper positions. This latter function is eiec- .tively performed by the beads or ridges. It will also be seen that the front mounting units serve to locate properly the front wall of the chassis with respect to the cabinet wall I so that the parta ofthereceivensuchasthehiningcontmlextendingthrcugh thewall,areoorrectlyaligned with the cabinet wail, thuspreventing binding oi' said controls. The mounting further serves to preventdamagetothesepartsinshipment.

In Pig. 4, thereisshown one o! the rear mountingunitsi. Eachoitheaeunitscomprisesa sleeve orbushing Il (see Fig. 7) having an enlarged head or hange It and which is adapted toseatinanopeningl'linthebottomwallloi the radiocabinetwiththeheadorhange it restingagainsttheuppersurfaceoithewalll. Thissleeveorbushingisalsoformedoihighly resilientmaterialsuchasiiverubber. Theunit also comprises a washer il formed ot similar material, a metallic washeril, and a metallic sleeve 20.

These elements are assembled as shown clearly in Fig. 4. The sleeve 2l is positioned within the sleeve or bushing Il, while the resilient washer Il abuts against sleeve Il. The metal washer Il is placed against lthe resilient washer and abuts the lower end o! sleeve 2l. The mounting portion'l of thechassisseats upontheheador ilange i6 andascrewiipassesthroughthe assembled elements and serves to fasten the chassis.

Thus, there are provided at the rear oi' thev chassis two cushioning mounting units which serve to hoatingly support the rear portion of the chassis and to prevent movement thereof parallel to wall 2. The sleeve Zlserves as a spacer and limits the compression ot the resilient members to the direddegree when the screw 2| is tightened. The metal washer serves as 'a pressure member, applying pressure caused by tightening of the screw over the area oi the resilient washer Il.

Itisimportanttonotethatthechassisis resiliently or hoatingly supported at four points arranged in pairs which are diagonally located. This not only facilitates assembly but isalso more eii'ective in the provision oi' a full-hosting chassis than would be the case it the mounting units were located otherwise. In assembly, it is merelynecessarytoposition thechassiswithin the cabinet with the lugs l in their recessed `cushioning elements and the rear portion oi the chassis will thenbe in proper position upon the cushioning sleeves or bushings Ii toenable rapid and easy attachment. With the chassis thus mounted, it is effectively shielded against jolts, such as might be caused by contactwith the rigid cabinet during shipping. 'Ihe delicate partsoi'thereceivercarriedbythechais are, therefore, protected against injury.- Further.- more, the mounting requires no attention or manipulation on the part oi the customer when the assembled radio receiver reaches him. A still further advantage of the molmting is that it completely isolates the chassis i'rom the radio cabinet, thereby preventing transmission of vibrations from the cabinet through the chassis to be responsive elements ot the receiver. Buch vibrations are prone to came microphonic actionottheaaidelenents. Thisiseitectively prevented hy'theiaolationoi'thechassisi'rom the cabinet. .Ithasbeenthepractieeheretoioretomount the receiver chassis upon ioursupports and to provide one or morecuahioning elements be- `tweenthefrontwallotthechasslsanrlthe iront wailoithecabinetlhepluentinvention eliminates the necenity of such cushioning elements. since the iront mounting-units serve this` Purpose. Moreover, only two bottom supports are necessary in the present mounting, the iront mounting units serving to support the iront portionofthechassis. Astiiliurtheradvantage oi the invention is lthat the construction oi the mounting units eliminates the necessity of attention or manipulation by the customer which has been required by prior devices.

It will be understood, of course, that the invention is susceptible to modification or change such as will occur to persons skilled in the art and,

therefore, it is to be limited only by the scope oi' the appended claims.

I claim:

i. Amounting toraradio setchassis andthe like, comprising a pair oi mounting units seating the bottom oi the chassis near the rear thereof, and a second pair of mounting units seating the front of the chassis, said hrst pair of umts each comprising a resilient hanged sleeve or bushing seated in an opening in a bottom wall of the radio cabinet and resiliently supporting the chassis on its flanged end, a resilient washer at the opposite end of said sleeve, an attachment element extending through the chassis and through the sleeve and washer, and a rigid sleeve within said resilient sleeve, and said second pair oi' units each comprising a hanged cup-shaped' resilient member seated in a recess in the iront wall of the cabinet with its hanged portion en- 80d by the chassis and adapted to ,receive a projection on the chassis, whereby the chassis is hoatingly mounted.

nsl

2. In a radio set having-a cabinet and a chassis.

' means for resiliently supporting the chassis'comprising a resilient generally cylindrical member having a hanged end and having a cylindrical aperture extending inward' from said hanged end and disposed .eecentrically above the axis oi' said member, said memiber being= seated snugly in a recess in a wall of said cabinet with its hange against a face oi said wall, and a cylindrical projection on said chassis seated in the aperture oi' said resilient member with a face oi' said chassis engaging said hange.

3. In a radio receiver, a front supporting wall, `a radio receiver chassis having a iront wall in proximity to said supporting wail, chassis supporting means comprising a plurality oi' resilient recessed members at the upper iront part oi' said chassis each having a hanged end and seated in a recess in one oi said walls with its hange bearing thereagainst, projections on the other oi' said wallsl seated in the recesses oi said resilient members, said hanges being of substantial area to serve as cushion rests for said other wall, and means for resiliently supporting and anchoring the rear lower part of said chassis and permitting only limited movement of the chassis insuihcient to enable said projections to withdraw from said receased members, the aforesaid diagonally located .supporting rneans being the only supports for said ing a plurality of resilient recessed members each having a anged end and'seated in a recess in one of said walls with its flange bearing thereagainst, projections on the other of saidl walls seated in the recesses of said resilient members, said flanges being of substantial area to serve as cushion rests for said other wall, and means attached to said panel for resiliently supporting and anchoring the rearof said chassis and permitting only limited movement of the chassis insuioient to enable saidprojections to withdraw from said recessed members, the aforesaid supporting means being the only supports for said chassis, whereby said chassis may be mounted by first inserting said `projections in said recessed members and then securing saidv rear supporting to said panel, chassis supporting means comprising a plurality of resilient recessed members each having a flanged end and seated in a recess in said supportingwall adjacent the upper part of said chassis wall with the ange of said member bearing against said supporting wall, a projectin on the upper part of said chassis Wall seated in the recesses of said resilient members, said anges being of substantial area to serve as cushion rests for said chassis Wall, and means attached to said panel forv resiliently supporting and anchoring the rear lower part of said chassis and permitting ,only limited movement of the chassis insuflicient to enable said projections to' with- 'draw from said recessed members, the said diagonally located supporting means being the only supports for said chassis, whereby said chassis may be mounted by first inserting said projections in said recessed members and then securing said rear supporting means, and said chassis when mounted is floatingly supported but is positively prevented from moving forwardly or laterally in an amount suiicient to deleteriously affect the delicate radio parts.

' WILLIAM J. SNYDlIRh 

